USE OF ADSORBENTS FOR RECOVERY OF ACETIC-ACID FROM AQUEOUS-SOLUTIONS .3. SOLVENT REGENERATION Academic Article uri icon

abstract

  • Solvent leaching was investigated as a method of regeneration for activated carbons and polymer sorbents loaded with acetic acid by contact with aqueous solutions. Both batchequilibration and fixed-bed experiments were employed. Methanol, methyl acetate, and acetone are suitable regeneration solvents for most activated carbons. Amoco GX-031 is an exception, giving incomplete regeneration. Methanol provides still more efficient regeneration for macroreticular styrene-divinylbenzenes adsorbents. Among basic sorbents, amine resins give incomplete regeneration by solvent leaching, as does a poly N oxide. Polybenzimidazole, a weaker base, gives higher recoveries of acetic acid when leached by solvents. Poly(4-vinylpyridine) is regenerated completely and efficiently by methanol, methyl acetate, and acetone in a fixed-bed geometry. It thus appears that an intermediate degree of basicity is desirable in a synthetic sorbent for acetic acid-- strong enough to give the uptake benefits of acid-base interactions, but weak enough to be regenerable. 1987, Taylor & Francis Group, LLC. All rights reserved.

published proceedings

  • SEPARATION AND PURIFICATION METHODS

author list (cited authors)

  • FRIERMAN, M., KUO, Y., JOSHI, D., GARCIA, A. A., & KING, C. J.

citation count

  • 7

complete list of authors

  • FRIERMAN, M||KUO, Y||JOSHI, D||GARCIA, AA||KING, CJ

publication date

  • January 1987